How to fix many Excel problems

When Excel is started, it opens an *.xlb file, which contains your menu and toolbar customizations. If this file is damaged, it may cause Excel to crash when it is started. Also, this file may (for some reason) be very large. In such a case, this may also cause Excel to crash. Typically, your *.xlb file should be 500K or smaller.

If Excel crashes when it is started, try deleting your *.xlb file. To do so:

1. Close Excel
2. Search your hard drive for *.xlb. The filename and location will vary.
3. Create a backup copy of this file and then delete the file.
4. Re-start Excel. Hopefully, Excel will now start up normally.

NOTE:
Remember deleting your *.xlb file will also delete any toolbar or menu customizations.